<div class="container">
  <div class="col-md-4 col-md-offset-4">
    <div class="form-group">
      <div class="input-group">
        <div class="input-group-addon">
          {{category['cid']}}
        </div>
        <input type="text" class="form-control" id="exampleInputAmount" [value]="category.cname" #box
               (keyup.enter)="onEnter(box.value,category.cid)">
      </div>
    </div>
  </div>
</div>
